HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)LowContained

ALTA PARK CAPITAL, LP

bd_b53295453c9a5d75 · schema v1 · pii pii-v2

Severity

Low

Discovered

Jun 17, 2026

Filed

Aug 1, 2026

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

64%

Full breach record for ALTA PARK CAPITAL, LP →

Alta Park Capital, LP notified individuals that an unauthorized actor accessed an employee's email account between April 21 and June 17, 2026. The actor sent unauthorized emails and viewed limited emails. Investigation confirmed viewed emails did not contain sensitive information, but some attachments contained names and other basic identity information. No evidence of misuse was found. APC secured the account, engaged forensic specialists, and is offering credit monitoring.

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Incident timeline

undetected · 57 days

Apr 21, 2026

Begins

Jun 17, 2026

Discovered

Aug 1, 2026

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Vermont State AGbd_1dca86cfcec4c0b82026-08-14 · +13dVerified
New Hampshire State AGbd_a212e96ffeee96a52026-08-14 · +13dVerified

Name: ALTA PARK CAPITAL, LP
norm: alta park

Name: ALTA PARK CAPITAL, LP
norm: alta park
Industry: Financial Servicesllm

Discovered: Jun 17, 2026
Breach occurred: Apr 21, 2026 – Jun 17, 2026
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 14, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Providing notice of this event to regulators where required
Initial access: valid_credentials

During the incident: Secured the employee's email account
Engaged external cybersecurity specialists to commence a full investigation
Conducted a detailed review of email attachments to determine whether they contained sensitive information
Providing notice of this event to regulators where required
Offering complimentary access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge through Cyberscout
Changes made: Reviewed its policies and procedures
Implemented additional security measures to better prevent future similar incidents
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGAug 1 · first · this page

Vermont State AG+13d

New Hampshire State AG+13d

Pattern: first filing Aug 1 (MA), last Aug 14 (NH) — a 13-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.mass.gov/doc/2026-1363-alta-park-capital-lp/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 1, 2026
Raw hash: b2704e8cdce438524ecd6213dce160c412eb1934e2665038e9d0f7e7d468307a

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityALTA PARK CAPITAL, LP

Victim entityALTA PARK CAPITAL, LP

Incidentdiscovered Jun 17, 2026

Stated responseSecured the employee's email account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov